Eco-friendly nanocomposites between carboxylated acrylonitrile–butadiene rubber (XNBR) and graphene oxide or graphene at low content with enhanced mechanical properties

Smaoui, Imen; Domatti, Anne; Kharrat, Mohamed; Dammak, M.; Monteil, Guy

doi:10.1080/1536383x.2016.1170011

Cited by 21 publications

(11 citation statements)

References 40 publications

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“…17 Upon the chemical oxidation, an increase in the inter-planar distance is observed due to the formation and intercalation of oxygen-containing groups and water molecules. 18 This expansion can be justified by the shift of the peak to a lower angle at 2 θ = 10.08°, which indicates an expansion in the interlayer distance from 3.4 to 9.02 Å. In addition, the absence of any secondary peaks indicates a complete oxidation of the graphite.…”

Section: Resultsmentioning

confidence: 96%

Tribological and mechanical characterization of epoxy/graphite composite coatings: Effects of particles’ size and oxidation

Gafsi

Smaoui

Verdejo

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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The present study investigates the mechanical and tribological properties of an epoxy matrix filled with different graphitic particles deposited on an aluminum substrate by the electrostatic spray technique. Three different particles added to the epoxy matrix were the received graphite, the crushed graphite obtained by crushing the natural flake graphite particles using a ball mill, and graphite oxide obtained by oxidation treatment. Nanoindentation tests were conducted on the different coatings in order to evaluate the surface hardness and the contact elastic modulus. The effect of the oxidation treatment and the loading content on the tribological behavior of the above composites were also evaluated under dry-friction conditions. As expected, the smaller the particle size, the greater the reduction in the dynamic friction. The experimental findings showed that adding 5 wt % of crushed graphite (10 µm) provided a similar dynamic friction as the addition of 10 wt % of received graphite (20 µm). The epoxy filled with received graphite showed a lower wear rate than that filled with graphite oxide and crushed graphite. Moreover, both hardness and elastic modulus increased in the case of the epoxy filled with graphite oxide and crushed graphite.

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Section: Resultsmentioning

confidence: 96%

Tribological and mechanical characterization of epoxy/graphite composite coatings: Effects of particles’ size and oxidation

Gafsi

Smaoui

Verdejo

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…M H reflects the maximum crosslinking degree of vulcanizates, and M L represents the interaction between fillers and fillers. The smaller M L , the better fluidity of uncured rubber and dispersion of fillers . The difference between M H and M L is often used to characterize the equivalent crosslinking density of the rubber.…”

Section: Resultsmentioning

confidence: 99%

Enhanced mechanical property, thermal and electrical conductivity of natural rubber/graphene nanosheets nanocomposites

Qin

Deng

et al. 2019

Polymer Composites

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Graphene nanosheets (GNs) were prepared by supercritical solvent intercalation method and cyclic stripping method under high pressure and stress. This “non‐chemical method” reduces impurities and avoids the destruction of graphene's intrinsic structure. In order to decrease the secondary stacking in processing, firstly GNs were dispersed in natural rubber (NR) latex to prepare NR/GNs concentrated master batch, and then combined with solid NR by mechanical blending. Since GNs have good dispersion in rubber matrix, a strong intermolecular force is formed between GNs and NR. Tensile strength, elongation at break, stress at 100% strain, stress at 300% strain, and tear strength of NR/GNs nanocomposites with 2 wt% GNs are enhanced 59.53%, 17.85%, 67.07%, 80.12% and19.20% respectively compared with NR. With more GNs, the NR/GNs nanocomposites exhibit lower Tg and better thermal stability. When the content of GNs in NR/GNs nanocomposites reaches 2 wt%, the Tg of nanocomposites drops about 2°C, and the remaining carbon at 600°C of nanocomposites increase by 3.07%. Moreover, It is demonstrated that the NR filled with 2 wt% GNs possess excellent thermal conductivity of 0.24 W m−1 K−1，which is a 50% increment compared with pure NR. Meanwhile, the electrical conductivity of the composites increases by four orders of magnitude than that of pure NR. These results clearly indicate that GNs can be expected to be manufactured at large scale and utilized in heat‐conducting and antistatic rubber.

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“…With 0.5, 1, 2, 3, and 4 phr of RGO, the hardness of ACM, respectively, increased to 52, 62, 73, 81, and 94. One possible reason for the enhancement of mechanical property was attributed to the strong interaction force between RGO and ACM, 26 and the other might be due to the auxiliary effect of residual carboxyl groups on RGO in the vulcanization process to form dense crosslinking structure. Figure 9(a,b) shows the plots of storage modulus (E 0 ) and loss modulus (E 00 ) versus temperature from DMTA for ACM and ACM/RGO composites with different amounts of RGO.…”

Section: Resultsmentioning

confidence: 99%

In situpreparation of reduced graphene oxide reinforced acrylic rubber by self‐assembly

Wang

Lai

et al. 2018

J of Applied Polymer Sci

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Reduced graphene oxide reinforced acrylic rubber (ACM/RGO) was in situ prepared via self‐assembly method in the presence of hydrazine hydrate as reducing agent. X‐ray diffraction and X‐ray photoelectron spectroscopy confirmed the chemical structure of ACM/RGO, and transmission electron microscope and scanning electron microscope demonstrated that RGO was uniformly dispersed in ACM matrix. Due to the barrier role of RGO sheets, the resistances to heat and water of ACM/RGO were obviously improved. Furthermore, the mechanical properties were also largely affected by the incorporation of RGO. With 2 parts per hundred rubber of RGO, the tensile strength and Shore A hardness of ACM/RGO reached 18.8 MPa and 73, and the elongation at break maintained at 236%. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47187.

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Eco-friendly nanocomposites between carboxylated acrylonitrile–butadiene rubber (XNBR) and graphene oxide or graphene at low content with enhanced mechanical properties

Cited by 21 publications

References 40 publications

Tribological and mechanical characterization of epoxy/graphite composite coatings: Effects of particles’ size and oxidation

Tribological and mechanical characterization of epoxy/graphite composite coatings: Effects of particles’ size and oxidation

Enhanced mechanical property, thermal and electrical conductivity of natural rubber/graphene nanosheets nanocomposites

In situpreparation of reduced graphene oxide reinforced acrylic rubber by self‐assembly

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